Finding the Fourth Proportional to 860,423.52, 1,187,335.71 and 478,442.10
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Solution
The fourth proportional to 860,423.52, 1,187,335.71 and 478,442.10 is: 660,222.99
Step by Step Solution
- Step 1: Write the proportion equation
860,423.52 : 1,187,335.71 = 478,442.10 : x - Step 2: Convert to fraction form
860,423.52/1,187,335.71 = 478,442.10/x - Step 3: Cross multiply
860,423.52x = 1,187,335.71 × 478,442.10 - Step 4: Simplify right side
860,423.52x = 568,071,390,497.39 - Step 5: Solve for x
x = 568,071,390,497.39/860,423.52 - Step 6: Final answer
x = 660,222.99
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1.5x scale
Why These Related Problems?
These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.